JPH0356890B2 - - Google Patents

Info

Publication number
JPH0356890B2
JPH0356890B2 JP28624886A JP28624886A JPH0356890B2 JP H0356890 B2 JPH0356890 B2 JP H0356890B2 JP 28624886 A JP28624886 A JP 28624886A JP 28624886 A JP28624886 A JP 28624886A JP H0356890 B2 JPH0356890 B2 JP H0356890B2
Authority
JP
Japan
Prior art keywords
port
adherend
sheets
high frequency
sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP28624886A
Other languages
Japanese (ja)
Other versions
JPS63139726A (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP61286248A priority Critical patent/JPS63139726A/en
Priority to GB8727668A priority patent/GB2198082B/en
Priority to IT2281187A priority patent/IT1223389B/en
Priority to CN198787108238A priority patent/CN87108238A/en
Priority to FR8716663A priority patent/FR2607437B1/en
Publication of JPS63139726A publication Critical patent/JPS63139726A/en
Priority to US07/348,133 priority patent/US4950347A/en
Publication of JPH0356890B2 publication Critical patent/JPH0356890B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/32—Induction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/82—Testing the joint
    • B29C65/8207—Testing the joint by mechanical methods
    • B29C65/8246—Pressure tests, e.g. hydrostatic pressure tests
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • B29C66/53261—Enclosing tubular articles between substantially flat elements
    • B29C66/53262—Enclosing spouts between the walls of bags, e.g. of medical bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
    • B29C66/7314—Electrical and dielectric properties
    • B29C66/73143—Dielectric properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81262—Electrical and dielectric properties, e.g. electrical conductivity
    • B29C66/81263—Dielectric properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3676—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/748—Joining plastics material to non-plastics material to natural products or their composites, not provided for in groups B29C66/742 - B29C66/746
    • B29C66/7485—Natural fibres, e.g. wool, cotton
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/748—Joining plastics material to non-plastics material to natural products or their composites, not provided for in groups B29C66/742 - B29C66/746
    • B29C66/7486—Paper, e.g. cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81423—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being concave
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2001/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2009/00—Use of rubber derived from conjugated dienes, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2009/00—Use of rubber derived from conjugated dienes, as moulding material
    • B29K2009/06—SB polymers, i.e. butadiene-styrene polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2019/00—Use of rubber not provided for in a single one of main groups B29K2007/00 - B29K2011/00, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/08—PVDC, i.e. polyvinylidene chloride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2031/00—Use of polyvinylesters or derivatives thereof as moulding material
    • B29K2031/04—Polymers of vinyl acetate, e.g. PVAc, i.e. polyvinyl acetate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2055/00—Use of specific polymers obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of main groups B29K2023/00 - B29K2049/00, e.g. having a vinyl group, as moulding material
    • B29K2055/02—ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2079/00—Use of polymers having nitrogen, with or without oxygen or carbon only, in the main chain, not provided for in groups B29K2061/00 - B29K2077/00, as moulding material
    • B29K2079/08—PI, i.e. polyimides or derivatives thereof
    • B29K2079/085—Thermoplastic polyimides, e.g. polyesterimides, PEI, i.e. polyetherimides, or polyamideimides; Derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0085—Copolymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29K2311/00—Use of natural products or their composites, not provided for in groups B29K2201/00 - B29K2309/00, as reinforcement
    • B29K2311/10—Natural fibres, e.g. wool or cotton
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
    • B29K2995/0006—Dielectric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
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    • B29L2031/7148—Blood bags, medical bags

Abstract

A method of welding thermoplastic resin with a high frequency welder, comprising the step of: putting an exothermic object to generate heat and an adherend made of thermoplastic resin not to be molten when high frequency waves are applied, between electrodes of a high frequency welder and thereafter generating high frequency waves between the electrodes. The method of the present invention enables to weld thermoplastic resin having a low dielectric loss which can not be welded with a high frequency welder.

Description

【発明の詳細な説明】[Detailed description of the invention]

［産業上の利用分野］ 本発明は医療用バツグのポート取り付け方法に
関する。さらに詳しくは、高周波ウエルダーを用
いても溶着することができない熱可塑性樹脂から
なる医療用バツグと円筒状ポートを容易にしかも
均一ににかつ確実に溶着しうる医療用バツグのポ
ート取り付け方法に関する。 ［従来の技術］ 誘電体損失が小さく、高周波ウエルダーを用い
て溶着させることができない熱可塑性樹脂を溶着
する方法としては、一般にインパルスシーラーを
用いて溶着する方法、加熱した金型を用いて溶着
する方法および超音波発生装置を用いて溶着する
方法が知られている。 インパルスシーラーを用いて溶着する方法は、
その表面が平面状である金属製の抵抗発熱体に電
流を流して発熱させ、かかる熱を利用しておもに
熱可塑性樹脂からなるシート状の被着体どうしを
帯状または直線状に溶着させる方法であり、抵抗
発熱体の温度調節が容易であるという長所を有す
る。しかしインパルスシーラーを用いて溶着する
方法では、たとえば２枚のシート状の被着体のあ
いだにたとえば硬度が小さい円筒状ポートなどの
チユーブを挿入して溶着したばあい、チユーブが
歪曲したり、またチユーブと２枚のシートとの境
界面を完全にシールすることができないためにリ
ークが発生することがあるという欠点がある。 加熱した金型を用いて溶着する方法は、金型を
加熱し、かかる熱を利用して熱可塑性樹脂からな
る被着体どうしを溶着させる方法であり、金型の
形状を被着体の形状に合致させることにより種々
の形状の被着体に適合させ、加熱溶融させること
ができるという長所を有する。しかしながら、金
型温度は周囲の雰囲気温度によつて影響を受けて
変化し、また溶着をくり返し行なうにつれて低下
することがあるので、該金型温度を制御するのは
きわめて困難である。たとえば、金型温度が高く
なり過ぎたばあいには、溶着した際に被着体が溶
融変形して外観不良となり、また該金型温度が低
いばあいには、溶着する時間が長くなつて生産性
が低下したり、被着体どうしが完全に均一に溶着
しない、すなわち溶着不良を生じることがある。 超音波発生装置を用いて溶着する方法は、超音
波発生装置から発生した超音波を被着体に伝播
し、複数の接触された被着体の境界面に超音波の
振動エネルギーにより熱を発生させ、かかる熱に
よつて被着体どうしを溶着させる方法であり、被
着体の境界面を溶着するものであるから、溶着に
よる外観不良が発生せず、ま熱源を必要としない
ので、容易に被着体どうしを溶着させることがで
きるという長所を有する。しかし超音波発生装置
を用いて溶着する方法では、たとえばポリブタジ
エン、低密度ポリエチレン、スチレン−ブタジエ
ン系エラストマーなどの軟質材料からなる被着体
は発熱溶融しないので、これらの軟質材料を適用
することができない。またとくに表面上に付着し
た微粒子をはじめ、形状、材質、性能などに対し
て厳しい規制が設けられ、高い安全性が要求され
ている、たとえば輸液バツグ、血液バツグなどの
医療用バツグを超音波発生装置を用いて作製する
ばあい、該容器の表面上に超音波による振動によ
つて微粒子が発生することがあり、該微粒子を除
去するのに膨大な労力を必要とすることがある。
さらに溶着時には溶融した被着体が流出し、バリ
が発生することがある。 前記したとおり、従来より種々の熱可塑性樹脂
の溶着方法があるにもかかわらず、高周波ウエル
ダーを用いても溶着することができない熱可塑性
樹脂からなるシート状の被着体と硬度が小さい円
筒状ポートなどのチユーブを容易にしかも均一か
つ確実に溶着しうる方法はまだ見出されていな
い。 ［発明が解決しようとする問題点］ そこで本発明者は、前記のごとく従来技術の問
題点に鑑みてたとえばオレフイン系樹脂やABS
樹脂などのような高周波ウエダーを用いても溶着
することができない熱可塑性樹脂からなるシート
状の被着体と硬度が小さい円筒状ポートを容易に
しかも均一かつ確実に溶着して医療用バツグと円
筒状ポートを融着一体化するポート取り付け方法
を見出すべく鋭意研究を重ねた結果、本発明に到
達した。 ［問題点を解決するための手段］ すなわち、本発明は高周波によつて発熱しない
熱可塑性樹脂からなる医療用バツグと円筒状ポー
トを融着一体化するポート取り付け方法であつ
て、２枚の高周波によつて発熱する発熱体シート
を高周波電極間に配設し、該発熱体シート間に高
周波によつて発熱しない熱可塑性樹脂からなる２
枚の被着体シートを配設し、該被着体シート間に
高周波用金型が挿入された円筒状ポートを配設し
た状態で、前記高周波電極間に高周波エネルギー
を照射して前記円筒状ポートと前記被着体シート
を融着一体化したのち、発熱体シートおよび高周
波用金型を取り除くことを特徴とする医療用バツ
グのポート取り付け方法に関する。 ［作用および実施例］ 本発明は、誘電体損失の小さい熱可塑性樹脂を
高周波ウエルダーを用いては加熱溶融させること
はできないとされていた従来の技術からみれば意
外ともいえる新規な高周波ウエルダーを用いた溶
着方法の採用により、誘導体損失が小さいために
高周波ウエルダーを用いて溶着することができな
い熱可塑性樹脂からなる被着体シートと円筒状ポ
ートを容易にしかも均一かつ確実に溶着すること
をはじめて可能としたものである。さらに本発明
の医療用バツグのポート取り付け方法によれば、
被着体シートを約３〜10秒間ときわめて短時間で
溶着することができるので、該方法は量産性にす
ぐれたポート取り付け方法である。 本発明においては、高周波ウエルダーの電極間
に、高周波ウエルダーで発熱する発熱体シート、
高周波ウエルダーで溶融しない熱可塑性樹脂から
なる被着シートおよび円筒状ポートを挟んだの
ち、該電極間に高周波を発生させることにより被
着シートおよび円筒状ポートが溶着一体化され
る。 本発明において高周波ウエルダーで発熱する発
熱体シートとしては、ポリアミド、ポリアミドイ
ミド、ポリ塩化ビニル、ポリ塩化ビニリデン、ポ
リウレタン、アセチルセルロース、エチレン−酢
酸ビニル共重合体（酢酸ビニル含有率：８〜35重
量％）、たとえばポリクロロ三フツ化エチレンな
どの塩素含有フツ素系重合体などの樹脂を用いる
ことができるが、さらに耐熱性の発熱体が必要で
あるばあいには、たとえばガラス繊維強化ナイロ
ン、ガラス繊維強化ポリウレタン、ガラス繊維強
化ポリエチレンテレフタレートなどの繊維強化樹
脂や架橋されたポリ塩化ビニル、架橋されたエチ
レン−酢酸ビニル共重合体などの架橋された樹
脂、クロロプレンゴム、エピクロロヒドリンゴ
ム、クロロスルホン化ポリエチレン、塩素化ポリ
エチレンなどのような塩素含有合成ゴムを用いる
ことができる。前記した発熱体シートのなかで
は、軟質塩化ビニル樹脂は柔軟性が大きく、かつ
安価で使い捨てることができ、また塩素含有合成
ゴムは繰返し使用することができるので好適なも
のである。該発熱体シートの形状は溶着される被
着シートおよび円筒状ポートの形状に応じて適宜
選択され、たとえば平板面上に一部筒状面を有す
るものなどいかなるものであつてもよい。さらに
必要であるならば、高周波ウエルダーの電極上に
所望の形状を有する金型を設け、該金型に発熱体
シートを設置してもよい。 本発明において被着体シートに用いることがで
きる樹脂としては、たとえばポリエチレン、ポリ
プロピレン、ポリブタジエン、スチレン−ブタジ
エン系エラストマー、ポリスチレン、アクリロニ
トリル−ブタジエン−スチレン三元共重合体、エ
チレン系共重合体などのように直接高周波ウエル
ダーを用いては溶着することができない誘電体損
失の小さい熱可塑性樹脂があげられるが、本発明
においてはこれらの樹脂のみに限定されず、他の
誘電体損失の小さい熱可塑性樹脂を用いることも
できる。なお、エチレン系共重合体としてエチレ
ン−酢酸ビニル共重合体を被着体として使用する
ばあい、酢酸ビニル含有率が６重量％以下のもの
を使用する。 本発明に用いられる高周波ウエルダーとしては
従来より誘電体損失の大きい熱可塑性樹脂を溶着
する際に用いられている高周波ウエルダーであれ
ばいかなる種類の高周波ウエルダーを用いてもよ
く、本発明はかかる高周波ウエルダーの種類に限
定されるものではない。高周波ウエルダーの周波
数および出力は、被着体の大きさや種類などによ
つて被着体の溶融条件が異なるので一概には決定
することができないが、通常周波数は10〜100M
Hz、出力は50W〜100KWの範囲内で適宜調整さ
れる。 高周波ウエルダーの電極間に発熱体シートを設
けるのは、電極間に発生した高周波で発熱体シー
トを発熱させ、かかる発熱体によつて被着体シー
トを加熱するためである。高周波による発熱は被
着体シートの誘電率と誘電正接に比例するが、誘
電正接は被着体シートを加熱することにより増大
することが知られている。したがつて、発熱体シ
ートによる加熱に加え、被着体シートの誘電正接
の大幅な増大によつて被着体シートの誘電体損失
が増大し、高周波溶着が可能になるのである。 本発明においては該電極間に設けられた発熱体
シート、被着シートおよび円筒状ポートの構成と
しては種々のものを適用することができる。つぎ
にかかる構成の一例を図面に基づいて説明する。 第１図および第２図は、円筒状ポートが設けら
れていない部分における被着シートの溶着方法に
関する説明図である。 本発明においては、第１図に示すように、電極
１および２のあいだに発熱体シシート３および４
を配置し、さらに発熱体シート３および４のあい
だに被着シート５および６を配設する。 第１図において、発熱体シート３または４のい
ずれか一方の発熱によつて被着体シート５および
６を容易に溶着することができるばあいには、発
熱体シート３または４のいずれか一方のみを用い
てもよいが、発熱量を増加させ、溶着時間を短縮
させる必要があるばあいには、発熱体シート３お
よび４を併用するのが好ましい。 第１図に示されるように構成された発熱体シー
ト３および４ならびに被着体シート５および６
は、第２図に示されるように電極１および２で発
熱体シート３および４ならびに被着体シート５お
よび６を、溶着時に被着体シート５および６が破
断されない程度に軽く圧し、電極１および２のあ
いだに高周波を発生させ、発熱体シート３および
４を発熱させることにより被着体シート５および
６を加熱し、発熱させて溶融し、一体化する。な
お、電極１および２のあいだに高周波を加えて溶
着するのに要する時間は、発熱体シート３および
４ならびに被着体シート５および６の材質やその
厚さ、高周波の出力や周波数などによつて異なる
ので一概には決定することはできないが、たとえ
ば発熱体シート３および４として軟質ポリ塩化ビ
ニルフイルム（厚さ：0.3mm）を用い、被着体シ
ート５および６として低密度ポリエチレンフイル
ム（厚さ：0.2mm）を用い、高周波ウエルダー
（出力：4KW、周波数：46MHz）を用いて電極１
および２のあいだに電圧200V、電流0.3Aをかけ
てシール幅５mm、シール長さ200mmを溶着したば
あい、約５秒間であり、本発明の方法によればき
わめて短時間で溶着することができる。 第３図は、円筒状ポートが設けられる部分にお
ける被着シートと円筒状ポートの溶着方法に関す
る説明図である。第３図に示すように、電極上に
設けられた金型７および８のあいだにあらかじめ
所望の形状に成形された発熱体シート３および４
を設け、さらに発熱体シート３および４のあいだ
に被着シート５および６ならびに中心部に円柱状
の高周波用金型１０が挿入された円筒状ポート９
を設ける。第３図において、金型７および８で発
熱体シート３および４、被着シート５および６な
らびに円筒状ポート９を軽く圧し、金型７および
８のあいだに高周波を発生させることにより第４
図に示されるように被着体５および６ならび円筒
状ポート９が加熱され、発熱されて溶融し、一体
化される。 つぎに金型７および８から溶融、一体化された
溶着体１１を取り出し、発熱体シート３および４
を除去し、高周波用金型１０を抜き取ることによ
り、第５図に示されるような形状を有する溶着体
１１がえられる。 本発明の方法によれば、発熱体シートおよび被
着体シートは異質材料からなるため、被着シート
を溶融し、一体化する際に被着体シートと発熱体
シートとが溶着することがないので、被着体シー
トを溶融し、一体化した後に被着体シートと発熱
体シートとを容易に分離することができる。 なお、円筒状ポートが設けられていない部分に
おいては、くり返し被着体シートを溶着、一体化
することができるようにするために、たとえば第
６図に示されるように電極または金型７および８
の表面上に発熱体シート３および４を取り付けて
もよい。このとき発熱体シートに用いられる樹脂
としては、前記したごとくたとえばガラス繊維強
化ナイロン、ガラス繊維強化ポリウレタン、ガラ
ス繊維強化ポリエチレンテレフタレートなどの繊
維強化樹脂や架橋されたポリ塩化ビニル、架橋さ
れたエチレン−酢酸ビニル共重合体などの架橋さ
れた樹脂、クロロプレンゴム、エピクロロヒドリ
ンゴムのような塩素含有合成ゴムのような耐熱性
にすぐれた樹脂を用いるのが好ましい。 つぎに実施例に基づいて本発明のポート取り付
け方法をさらに詳細に説明するが、本発明はかか
る実施例のみに限定されるものではない。 製造例１ （医療用バツグの製造） 高周波ウエルダー（クインライト電子精工(株)
製、品番：LWH4060SB、出力：4KW、周波
数：46MHz）を用い、該高周波ウエルダーの電極
のあいだに発熱体シートとして軟質ポリ塩化ビニ
ルフイルム（厚さ：0.3mm）を２枚設け、該発熱
体シートのあいだに被着体シートとしてスチレン
−ブタジエン系エラストマー（MKレジン、大日
本プラスチツク(株)製、厚さ：0.25mm）を２枚重ね
合せて挿入し、全体を両電極で圧しながら、該電
極間に電圧200V、電流0.3Aをかけ、５秒間で幅
５mm、長さ200mmを溶着し、一体化した。 えられた２枚のスチレン−ブタジエン系エラス
トマーフイルムが溶着一体化されたフイルムの溶
着部は透明であり、凹凸もなく均一であつた。 つぎにえられたフイルムの溶着部における剥離
強度を求めたところ、5.4Kg／15mm幅と大きく、
たとえば医療用バツグなどとして用いたばあいで
あつても実用に充分耐えうるものであつた。 製造例２ （医療用バツグの製造） 製造例１において、被着体シートとして低密度
ポリエチレンフイルム（厚さ：0.2mm）を２枚重
ね合せたものを用いたほかは製造例１とまつたく
同様にして被着体シートを溶着して一体化したフ
イルムを作製した。 えられたフイルムの溶着部は透明であり、凹凸
もなく均一であつた。 つぎにえられたフイルムの溶着部における剥離
強度を求めたところ、5.2Kg／15mm幅と大きく、
実施例１でえられた２枚のスチレン−ブタジエン
系エラストマーフイルムが溶着一体化されたフイ
ルムと同様に実用上充分に満足しうる強度を有す
るものであつた。 製造例３〜26 （医療用バツグの製造） 発熱体シートおよび被着体シートとして第１表
に示したものを用いたほかは製造例１とまつたく
同様にして被着体シートを溶着して一体化したフ
イルムを作製したところ、第１表に示されるよう
に外観はすべて良好であり、また溶着に要する時
間は３〜10秒間ときわめて短時間であつた。 [Industrial Field of Application] The present invention relates to a method for attaching a port to a medical bag. More specifically, the present invention relates to a port attachment method for a medical bag that can easily, uniformly, and reliably weld a cylindrical port to a medical bag made of a thermoplastic resin that cannot be welded even using a high-frequency welder. [Prior art] Methods for welding thermoplastic resins that have small dielectric loss and cannot be welded using a high-frequency welder are generally welding using an impulse sealer and welding using a heated mold. Methods and methods of welding using ultrasonic generators are known. The method of welding using an impulse sealer is
A method in which a current is passed through a metal resistance heating element with a flat surface to generate heat, and the heat is used to weld sheet-like adherends made of thermoplastic resin together in a band or linear shape. It has the advantage that the temperature of the resistance heating element can be easily controlled. However, with the welding method using an impulse sealer, if a tube such as a cylindrical port with low hardness is inserted between two sheet-like adherends and welded, the tube may become distorted or A disadvantage is that leaks may occur because the interface between the tube and the two sheets cannot be completely sealed. The method of welding using a heated mold is a method in which the mold is heated and the heat is used to weld adherends made of thermoplastic resin. It has the advantage that it can be adapted to adherends of various shapes and can be heated and melted. However, it is extremely difficult to control the mold temperature because the mold temperature varies depending on the surrounding atmospheric temperature and may drop as welding is repeated. For example, if the mold temperature becomes too high, the adherend will melt and deform during welding, resulting in poor appearance; if the mold temperature is low, the welding time will become longer. Productivity may decrease, and adherends may not be completely uniformly welded together, that is, poor welding may occur. The method of welding using an ultrasonic generator involves propagating the ultrasonic waves generated by the ultrasonic generator to the adherends, and generating heat by the vibrational energy of the ultrasonic waves at the interface between the adherends that are in contact with each other. This is a method of welding the adherends to each other using such heat, and since the interface of the adherends is welded, there is no appearance defect due to welding, and there is no need for a heat source, so it is easy to weld. It has the advantage that adherends can be welded together. However, with the method of welding using an ultrasonic generator, adherends made of soft materials such as polybutadiene, low-density polyethylene, and styrene-butadiene elastomers do not generate heat and melt, so these soft materials cannot be applied. . In addition, ultrasonic waves are applied to medical bags such as infusion bags and blood bags, which have strict regulations regarding fine particles attached to the surface, shape, material, performance, etc., and require a high level of safety. In the case of manufacturing using an apparatus, fine particles may be generated on the surface of the container due to ultrasonic vibration, and an enormous amount of labor may be required to remove the fine particles.
Furthermore, during welding, the molten adherend may flow out and burrs may occur. As mentioned above, although there are various conventional welding methods for thermoplastic resins, there are sheet-like adherends made of thermoplastic resins that cannot be welded even with high-frequency welders, and cylindrical ports with low hardness. No method has yet been found for easily, uniformly and reliably welding tubes such as these. [Problems to be Solved by the Invention] Therefore, in view of the problems of the prior art as described above, the present inventors have developed, for example, olefin resins and ABS.
A sheet-like adherend made of thermoplastic resin, which cannot be welded even with a high-frequency wader such as resin, and a cylindrical port with low hardness are easily, uniformly and reliably welded to make medical bags and cylinders. As a result of intensive research to find a port attachment method that fuses and integrates the shaped ports, the present invention was achieved. [Means for Solving the Problems] That is, the present invention is a port attachment method for fusing and integrating a cylindrical port with a medical bag made of a thermoplastic resin that does not generate heat due to high frequency waves. A heating element sheet that generates heat due to high frequency waves is disposed between the high frequency electrodes, and between the heating element sheets, two parts made of thermoplastic resin that do not generate heat due to high frequency waves are placed between the high frequency electrodes.
With two adherend sheets arranged and a cylindrical port into which a high-frequency mold is inserted between the adherend sheets, high-frequency energy is irradiated between the high-frequency electrodes to form the cylindrical shape. The present invention relates to a method for attaching a port to a medical bag, characterized in that the heating element sheet and the high frequency mold are removed after the port and the adherend sheet are fused and integrated. [Operations and Examples] The present invention uses a novel high-frequency welder, which is surprising considering the conventional technology that it was believed that a thermoplastic resin with small dielectric loss could not be heated and melted using a high-frequency welder. By adopting a new welding method, it is possible for the first time to easily, uniformly, and reliably weld a cylindrical port to an adherend sheet made of thermoplastic resin, which cannot be welded using a high-frequency welder due to low dielectric loss. That is. Further, according to the method for attaching a port to a medical bag of the present invention,
Since the adherend sheets can be welded in a very short time of about 3 to 10 seconds, this method is a port attachment method with excellent mass productivity. In the present invention, a heating element sheet that generates heat by the high frequency welder is provided between the electrodes of the high frequency welder.
After the cylindrical port and the adherend sheet made of an unmelted thermoplastic resin are sandwiched in a high-frequency welder, the adherend sheet and the cylindrical port are welded together by generating high frequency waves between the electrodes. In the present invention, the heating element sheet that generates heat using a high-frequency welder includes polyamide, polyamideimide, polyvinyl chloride, polyvinylidene chloride, polyurethane, acetyl cellulose, and ethylene-vinyl acetate copolymer (vinyl acetate content: 8 to 35% by weight). ), for example, resins such as chlorine-containing fluorine-based polymers such as polychlorotrifluoroethylene can be used, but if a heat-resistant heating element is required, for example, glass fiber reinforced nylon, glass fiber reinforced nylon, etc. Fiber reinforced resins such as reinforced polyurethane, glass fiber reinforced polyethylene terephthalate, crosslinked polyvinyl chloride, crosslinked resins such as crosslinked ethylene-vinyl acetate copolymer, chloroprene rubber, epichlorohydrin rubber, chlorosulfonated polyethylene A chlorine-containing synthetic rubber such as chlorinated polyethylene or the like can be used. Among the heating element sheets described above, soft vinyl chloride resin is preferred because it has great flexibility, is inexpensive, and can be thrown away, and chlorine-containing synthetic rubber can be used repeatedly. The shape of the heat generating sheet is appropriately selected depending on the shape of the adherend sheet to be welded and the shape of the cylindrical port, and may be of any shape, for example, one having a flat plate surface with a portion of a cylindrical surface. Furthermore, if necessary, a mold having a desired shape may be provided on the electrode of the high-frequency welder, and a heat generating sheet may be placed in the mold. Examples of resins that can be used for the adherend sheet in the present invention include polyethylene, polypropylene, polybutadiene, styrene-butadiene elastomer, polystyrene, acrylonitrile-butadiene-styrene terpolymer, and ethylene copolymer. Examples include thermoplastic resins with low dielectric loss that cannot be directly welded using a high-frequency welder; however, the present invention is not limited to these resins, and may also include other thermoplastic resins with low dielectric loss. It can also be used. In addition, when using an ethylene-vinyl acetate copolymer as an adherend as an ethylene-based copolymer, one having a vinyl acetate content of 6% by weight or less is used. As the high frequency welder used in the present invention, any type of high frequency welder that has been conventionally used for welding thermoplastic resins with large dielectric loss may be used. It is not limited to the type of The frequency and output of a high-frequency welder cannot be determined unconditionally because the melting conditions of the adherend vary depending on the size and type of the adherend, but the frequency is usually 10 to 100M.
Hz, output is adjusted appropriately within the range of 50W to 100KW. The reason why the heating element sheet is provided between the electrodes of the high frequency welder is to cause the heating element sheet to generate heat using the high frequency generated between the electrodes, and to heat the adherend sheet by the heating element. Heat generation due to high frequency waves is proportional to the dielectric constant and dielectric loss tangent of the adherend sheet, and it is known that the dielectric loss tangent increases by heating the adherend sheet. Therefore, in addition to heating by the heating element sheet, the dielectric loss of the adherend sheet increases due to a significant increase in the dielectric loss tangent of the adherend sheet, making high frequency welding possible. In the present invention, various configurations can be applied to the heating element sheet, adherent sheet, and cylindrical port provided between the electrodes. Next, an example of such a configuration will be explained based on the drawings. FIGS. 1 and 2 are explanatory diagrams relating to a method of welding an adherend sheet in a portion where a cylindrical port is not provided. In the present invention, as shown in FIG.
are placed between the heating element sheets 3 and 4, and adherend sheets 5 and 6 are placed between the heat generating sheets 3 and 4. In FIG. 1, if the adherend sheets 5 and 6 can be easily welded by heat generated by either one of the heating element sheets 3 or 4, then either one of the heating element sheets 3 or 4 is used. However, if it is necessary to increase the calorific value and shorten the welding time, it is preferable to use the heating element sheets 3 and 4 together. Heating sheets 3 and 4 and adherend sheets 5 and 6 configured as shown in FIG.
As shown in FIG. 2, heat generating sheets 3 and 4 and adherend sheets 5 and 6 are lightly pressed with electrodes 1 and 2 to the extent that adherend sheets 5 and 6 are not broken during welding, and electrode 1 A high frequency wave is generated between the heat generating sheets 3 and 4 to heat the adherend sheets 5 and 6, and the adherend sheets 5 and 6 are heated, melted, and integrated. The time required to weld electrodes 1 and 2 by applying high frequency waves depends on the materials and thickness of heat generating sheets 3 and 4 and adherend sheets 5 and 6, the output power and frequency of high frequency waves, etc. For example, a soft polyvinyl chloride film (thickness: 0.3 mm) is used as the heating element sheets 3 and 4, and a low-density polyethylene film (thickness: 0.3 mm) is used as the adherend sheets 5 and 6. electrode 1 using a high frequency welder (output: 4KW, frequency: 46MHz).
It takes about 5 seconds to weld a seal width of 5 mm and seal length of 200 mm by applying a voltage of 200 V and a current of 0.3 A between 2 and 2. According to the method of the present invention, welding can be done in an extremely short time. . FIG. 3 is an explanatory diagram regarding a method of welding an adherend sheet and a cylindrical port in a portion where the cylindrical port is provided. As shown in FIG. 3, heating element sheets 3 and 4 are preformed into a desired shape between molds 7 and 8 provided on the electrodes.
and a cylindrical port 9 in which a cylindrical high frequency mold 10 is inserted in the center of the adhering sheets 5 and 6 between the heat generating sheets 3 and 4.
will be established. In FIG. 3, the heating element sheets 3 and 4, the adherend sheets 5 and 6, and the cylindrical port 9 are lightly pressed with the molds 7 and 8, and a high frequency wave is generated between the molds 7 and 8.
As shown in the figure, the adherends 5 and 6 and the cylindrical port 9 are heated, generate heat, melt, and become integrated. Next, the melted and integrated welded body 11 is taken out from the molds 7 and 8, and the heating element sheets 3 and 4 are removed.
By removing the high-frequency mold 10, a welded body 11 having a shape as shown in FIG. 5 is obtained. According to the method of the present invention, since the heat generating sheet and the adherend sheet are made of different materials, the adherend sheet and the heat generating sheet are not welded together when the adherend sheets are melted and integrated. Therefore, after the adherend sheet is melted and integrated, the adherend sheet and the heating element sheet can be easily separated. In addition, in the portion where the cylindrical port is not provided, in order to repeatedly weld and integrate the adherend sheets, electrodes or molds 7 and 8 are used as shown in FIG. 6, for example.
The heating element sheets 3 and 4 may be attached on the surface of the heating element. As mentioned above, examples of the resin used for the heating element sheet include fiber reinforced resins such as glass fiber reinforced nylon, glass fiber reinforced polyurethane, glass fiber reinforced polyethylene terephthalate, crosslinked polyvinyl chloride, and crosslinked ethylene-acetic acid. It is preferable to use a resin with excellent heat resistance, such as a crosslinked resin such as a vinyl copolymer, or a chlorine-containing synthetic rubber such as chloroprene rubber or epichlorohydrin rubber. Next, the port attachment method of the present invention will be explained in more detail based on examples, but the present invention is not limited to these examples. Production example 1 (Manufacture of medical bags) High frequency welder (Quinlite Denshi Seiko Co., Ltd.)
(product number: LWH4060SB, output: 4KW, frequency: 46MHz), two sheets of soft polyvinyl chloride film (thickness: 0.3 mm) were placed between the electrodes of the high-frequency welder as a heating element sheet, and the heating element sheet was Insert two sheets of styrene-butadiene elastomer (MK resin, manufactured by Dainippon Plastics Co., Ltd., thickness: 0.25 mm) as adherend sheets between the A voltage of 200V and a current of 0.3A were applied between the two, and a width of 5mm and a length of 200mm were welded and integrated in 5 seconds. The welded portion of the resulting film in which two styrene-butadiene elastomer films were welded together was transparent and uniform with no irregularities. Next, when we determined the peel strength of the welded part of the film, it was as large as 5.4Kg/15mm width.
For example, it was sufficiently durable for practical use even when used as a medical bag. Production Example 2 (Manufacture of medical bags) Same as Production Example 1 except that two stacked low-density polyethylene films (thickness: 0.2 mm) were used as the adherend sheet. An integrated film was produced by welding the adherend sheets together. The welded area of the obtained film was transparent and uniform with no irregularities. Next, when we determined the peel strength of the welded part of the film, it was as large as 5.2 kg/15 mm width.
Like the film obtained in Example 1 in which two styrene-butadiene elastomer films were welded together, it had a strength that was sufficiently satisfactory for practical use. Production Examples 3 to 26 (Manufacture of medical bags) The adherend sheets were welded in the same manner as Production Example 1, except that the heat generating sheet and the adherend sheet shown in Table 1 were used. When an integrated film was produced, it had a good appearance as shown in Table 1, and the time required for welding was extremely short, 3 to 10 seconds.

【表】【table】

【表】 実施例１ （医療用バツグのポートの取り付け） 製造例１で用いた高周波ウエルダーを用い、該
高周波ウエルダーの電極のあいだに発熱体シート
として軟質ポリ塩化ビニルフイルム（厚さ：0.3
mm）２枚を設け、該発熱体シートのあいだに被着
体シートとしてポリエチレンインフレフイルム
（厚さ：0.2mm）の一端を挿入し、全体を両電極で
圧しながら、該電極間に電圧200V、電流0.3Aを
かけ、該被着体シートの一端の幅５mm、長さ200
mmを溶着し、一体化した。 つぎに該インフレフイルムの他端に円筒状ポー
トに金型が挿入されたポリエチレン製パイプ状ポ
ート（内径：15mm、外径：18mm）を挿入し、つい
でインフレフイルムおよびパイプ状ポートを所望
の形状を有する金型電極のあいだに挿入してはさ
んだ後、この金型電極間に電圧200V、電流0.3A
をかけてポートとインフレフイルムを溶着一体化
し、ポート付輸液バツグ（容量：500ml）を作製
した。えられたポート付輸液バツグの斜視図を第
７図に示す。第７図において、１２はポート、１
３は輸液バツグである。 えられたポート付輸液バツグの溶着部は透明で
あり、凹凸もなく均一であつた。 つぎに該ポート付輸液バツグにエアーを送入
し、耐圧（空気圧：0.7Kg／m2）テストを行なつ
たが、リークなどの異常はなかつた。さらに該ポ
ート付輸液バツグ内に水500mlを注入し、該ポー
ト付輸液バツクを高さ1mから落下させても破裂
などの損傷などはまつたく生じなかつた。 実施例 ２ 実施例１で用いた高周波ウエルダーを用い、該
高周波ウエルダーに設けた所望の形状を有する金
型電極のあいだに発熱体シートとして軟質塩化ビ
ニルフイルム（厚さ：0.4mm）２枚を設け、該２
枚の軟質塩化ビニルフイルムのあいだにSEBS系
エラストマー（MKレジン、MK−3S、大日本プ
ラスチツクス(株)製）からなる２枚のシート（厚
さ：0.25mm、長さ：150mm、幅：120mm）を挿入
し、さらにこの２枚のシートのあいだにSEBS系
エラストマーからなる、内部に膜チユーブ（内
径：５mm、外径：７mm）が設けられたポートカバ
ー２本および採血チユーブ（内径：３mm、外径：
4.5mm）１本を挿入し、金型電極間に電圧200V、
電流0.3Aを約７秒間かけ、シート、ポートカバ
ーおよび採血チユーブを溶着一体化した。 つぎに溶着されていない、重ねられた２放の被
着シートの周囲を前記と同様にして約７秒間で溶
着し、血液バツグ（容量：230ml）を作製した。
えられた血液バツグの斜視図を第８図に示す。第
８図において、１５は膜チユーブ１４をカバーす
るポートカバー、１６は血液バツグ、１７は採血
チユーブ、１８は採血針である。 つぎにえられた血液バツグを厚生省告示448号
（昭和49年９月28日）に規定された塩化ビニル樹
脂製血液セツト基準に基づいて気密度試験、遠心
試験および耐圧試験を行なつた。その結果を第２
表に示す。[Table] Example 1 (Attachment of port of medical bag) Using the high frequency welder used in Production Example 1, a soft polyvinyl chloride film (thickness: 0.3
mm), one end of a polyethylene inflation film (thickness: 0.2 mm) is inserted as an adherend sheet between the heat generating sheets, and while pressing the whole with both electrodes, a voltage of 200 V is applied between the electrodes. Applying a current of 0.3A, one end of the adherend sheet has a width of 5mm and a length of 200mm.
mm were welded and integrated. Next, a polyethylene pipe port (inner diameter: 15 mm, outer diameter: 18 mm) with a mold inserted into the cylindrical port is inserted into the other end of the inflation film, and then the inflation film and pipe port are shaped into the desired shape. After inserting it between the mold electrodes, apply a voltage of 200V and a current of 0.3A between the mold electrodes.
An infusion bag with a port (capacity: 500ml) was created by welding the port and the inflation film together. A perspective view of the obtained infusion bag with a port is shown in FIG. In FIG. 7, 12 is a port, 1
3 is an infusion bag. The welded area of the obtained ported infusion bag was transparent and uniform with no irregularities. Next, air was introduced into the ported infusion bag and a pressure resistance test (air pressure: 0.7 Kg/m 2 ) was performed, but there were no abnormalities such as leaks. Furthermore, even when 500 ml of water was injected into the ported infusion bag and the ported infusion bag was dropped from a height of 1 m, no damage such as bursting occurred. Example 2 Using the high-frequency welder used in Example 1, two sheets of soft vinyl chloride film (thickness: 0.4 mm) were provided as heat generating sheets between the mold electrodes having the desired shape provided on the high-frequency welder. , said 2
Two sheets (thickness: 0.25 mm, length: 150 mm, width: 120 mm) made of SEBS elastomer (MK resin, MK-3S, manufactured by Dainippon Plastics Co., Ltd.) are placed between two sheets of soft vinyl chloride film. ), and between these two sheets two port covers made of SEBS elastomer with a membrane tube (inner diameter: 5 mm, outer diameter: 7 mm) and a blood collection tube (inner diameter: 3 mm, Outer diameter:
4.5mm) and apply a voltage of 200V between the mold electrodes.
A current of 0.3 A was applied for about 7 seconds to weld the sheet, port cover, and blood collection tube together. Next, the peripheries of the two overlapping sheets that had not been welded were welded for about 7 seconds in the same manner as described above to produce a blood bag (capacity: 230 ml).
A perspective view of the obtained blood bag is shown in FIG. In FIG. 8, 15 is a port cover that covers the membrane tube 14, 16 is a blood bag, 17 is a blood collection tube, and 18 is a blood collection needle. The obtained blood bags were then subjected to airtightness tests, centrifugation tests, and pressure resistance tests based on the vinyl chloride resin blood set standards stipulated in Ministry of Health and Welfare Notification No. 448 (September 28, 1972). The result is the second
Shown in the table.

【表】 第２表に示された結果からわかるようにえられ
た血液バツクは塩化ビニル樹脂製血液セツト基準
を満足しうるものであつた。 ［発明の効果］ 本発明のポート取り付け方法は、従来より誘電
体損失が小さく、高周波ウエルダーを用いては溶
着することができないとされていた熱可塑性樹脂
からなる被着シートとたとえば硬度の小さい熱可
塑性樹脂からなる円筒状ポートを、該円筒状ポー
トを歪曲させたり、被着シートと円筒状ポートの
接合部におけるリークなどの発生させることな
く、均一かつ確実に円筒状ポートおよび被着シー
トを溶着することができるので、たとえばポート
付輸液バツグ、血液バツグなどの薬液、体液保存
容器など、形状、材質、性能などが厳しく規制さ
れ、しかも高い安全性が要求される医療用バツグ
を従来の方法よりも容易に作製することができ
る。 また本発明の医療用バツグのポート取り付け方
法によれば、ポリプロピレン製容器などのように
従来ではブロー成形により作製されていた医療用
バツグなども大規模な金型を必要としないで容易
にかつ短時間で生産することができる。[Table] As can be seen from the results shown in Table 2, the obtained blood bag could satisfy the vinyl chloride resin blood set standards. [Effects of the Invention] The port attachment method of the present invention can be applied to an adherend sheet made of a thermoplastic resin, which has a smaller dielectric loss than conventional methods and cannot be welded using a high-frequency welder, and a thermoplastic resin with a low hardness. Welds a cylindrical port made of plastic resin uniformly and reliably to a cylindrical port and an adhered sheet without distorting the cylindrical port or causing leaks at the joint between the adhered sheet and the cylindrical port. For example, medical bags such as infusion bags with ports, blood bags, and other medical fluids and body fluid storage containers, whose shape, material, and performance are strictly regulated and require a high level of safety, can be manufactured using the conventional method. can also be easily produced. Furthermore, according to the method for attaching ports to medical bags of the present invention, medical bags, such as polypropylene containers, which were conventionally produced by blow molding, can be easily and quickly manufactured without the need for large-scale molds. It can be produced in hours.

【図面の簡単な説明】[Brief explanation of drawings]

第１図〜第６図は本発明のポート取り付け方法
の概略説明図、第７図は本発明の実施例１でえら
れたポート付輸液バツグの斜視図、第８図は実施
例２でえられた血液バツグの斜視図である。 図面の主要符号、１，２：電極、３，４：発熱
体シート、５，６：被着体シート、９：円筒状ポ
ート。 1 to 6 are schematic explanatory diagrams of the port attachment method of the present invention, FIG. 7 is a perspective view of an infusion bag with a port obtained in Example 1 of the present invention, and FIG. FIG. Main symbols in the drawing: 1, 2: electrode, 3, 4: heating element sheet, 5, 6: adherend sheet, 9: cylindrical port.

Claims (1)

【特許請求の範囲】 １ 高周波によつて発熱しない熱可塑性樹脂から
なる医療用バツクと円筒状ポートを融着一体化す
るポート取り付け方法であつて、２枚の高周波に
よつて発熱する発熱体シートを高周波電極間に配
設し、該発熱体シート間に高周波によつて発熱し
ない熱可塑性樹脂からなる２枚の被着体シートを
配設し、該被着体シート間に高周波用金型が挿入
された円筒状ポートを配設した状態で、前記高周
波電極間に高周波エネルギーを照射して前記円筒
状ポートと前記被着体シートを融着一体化したの
ち、発熱体シートおよび高周波用金型を取り除く
ことを特徴とする医療用バツグのポート取り付け
方法。 ２ 発熱体シートがポリアミド、ポリアミドイミ
ド、ポリ塩化ビニル、ポリ塩化ビニリデン、ポリ
ウレタン、アセチルセルロース、クロロプレンゴ
ム、エピクロロヒドリンゴム、クロロスルホン化
ポリエチレン、塩素含有フツ素系重合体、塩素化
ポリエチレンまたはエチレン−酢酸ビニル共重合
体（酢酸ビニル含有率：８〜35重量％）からなる
ものである特許請求の範囲第１項記載の医療用バ
ツクのポート取り付け方法。 ３ 被着体シートがポリエチレン、ポリプロピレ
ン、ポリブタジエン、スチレン−ブタジエン系エ
ラストマー、ポリスチレン、アクリロニトリル−
ブタジエン−スチレン三元共重合体またはエチレ
ン系共重合体からなるものである特許請求の範囲
第１項記載の医療用バツグのポート取り付け方
法。[Scope of Claims] 1. A port attachment method for fusing and integrating a cylindrical port with a medical bag made of a thermoplastic resin that does not generate heat due to high frequency waves, comprising two heat generating sheets that generate heat due to high frequency waves. is placed between the high-frequency electrodes, two adherend sheets made of thermoplastic resin that do not generate heat due to high frequencies are placed between the heating sheets, and a high-frequency mold is placed between the adherend sheets. With the inserted cylindrical port arranged, high frequency energy is irradiated between the high frequency electrodes to fuse and integrate the cylindrical port and the adherend sheet, and then a heating element sheet and a high frequency mold are formed. A method of attaching a port to a medical bag, which is characterized by removing the . 2 The heating element sheet is made of polyamide, polyamideimide, polyvinyl chloride, polyvinylidene chloride, polyurethane, acetyl cellulose, chloroprene rubber, epichlorohydrin rubber, chlorosulfonated polyethylene, chlorine-containing fluoropolymer, chlorinated polyethylene or ethylene- The method for attaching a port to a medical bag according to claim 1, which is made of a vinyl acetate copolymer (vinyl acetate content: 8 to 35% by weight). 3 The adherend sheet is polyethylene, polypropylene, polybutadiene, styrene-butadiene elastomer, polystyrene, acrylonitrile.
The method of attaching a port to a medical bag according to claim 1, wherein the bag is made of a butadiene-styrene terpolymer or an ethylene copolymer.
JP61286248A 1986-01-12 1986-12-01 Welding method for thermoplastic resin Granted JPS63139726A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP61286248A JPS63139726A (en) 1986-12-01 1986-12-01 Welding method for thermoplastic resin
GB8727668A GB2198082B (en) 1986-12-01 1987-11-26 Method for the manufacture of plastic bags
IT2281187A IT1223389B (en) 1986-12-01 1987-11-30 METHOD FOR WELDING A THERMOPLASTIC RESIN
CN198787108238A CN87108238A (en) 1986-12-01 1987-11-30 The method of welding thermoplastic resin
FR8716663A FR2607437B1 (en) 1986-12-01 1987-12-01 METHOD FOR WELDING LOW DIELECTRIC LOSS THERMOPLASTIC RESIN WITH HIGH FREQUENCY WELDING APPARATUS
US07/348,133 US4950347A (en) 1986-01-12 1989-05-05 Method for welding thermoplastic resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61286248A JPS63139726A (en) 1986-12-01 1986-12-01 Welding method for thermoplastic resin

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2079997A Division JPH02269026A (en) 1990-03-27 1990-03-27 Method for mounting port to medical bag

Publications (2)

Publication Number Publication Date
JPS63139726A JPS63139726A (en) 1988-06-11
JPH0356890B2 true JPH0356890B2 (en) 1991-08-29

Family

ID=17701902

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61286248A Granted JPS63139726A (en) 1986-01-12 1986-12-01 Welding method for thermoplastic resin

Country Status (6)

Country Link
US (1) US4950347A (en)
JP (1) JPS63139726A (en)
CN (1) CN87108238A (en)
FR (1) FR2607437B1 (en)
GB (1) GB2198082B (en)
IT (1) IT1223389B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004267384A (en) * 2003-03-07 2004-09-30 Niccon Kohsan Co Ltd Manufacturing method of medical receptacle and medical receptacle

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4857129A (en) * 1987-07-31 1989-08-15 Plastic Welding Technologies, Inc. Method of bonding thermoplastic material using radio frequency energy
GB8721581D0 (en) * 1987-09-14 1987-10-21 Fabrex Ltd Fabric to fabric bonding
DE3936324A1 (en) * 1989-10-27 1990-12-06 Alfred Schwalbach Gmbh METHOD AND MACHINE FOR HIGH-FREQUENCY WELDING POLYOLEFINS
DE4017577A1 (en) * 1990-05-31 1991-12-05 Hft Obermeier Maschinenbau Gmb Welding film to heterogeneous laminate - by using one large earthed and two pressurised outer HF electrodes above assembly with electrically conducting film laid beneath laminate
DE4040687C1 (en) * 1990-12-19 1992-05-27 Paul Kiefel Hochfrequenz-Anlagen Gmbh, 8228 Freilassing, De
AU643587B2 (en) * 1991-01-17 1993-11-18 Terumo Kabushiki Kaisha Composite substrate for medical container
US5213713A (en) * 1991-03-21 1993-05-25 The United States Of America As Represented By The Secretary Of The Navy Process of shaping an electrorheological solid
CA2104864C (en) * 1991-03-22 1997-03-18 Claude Desmarais Thermoplastic film and method of welding same
US5225025A (en) * 1991-05-14 1993-07-06 Aluminum Company Of America Apparatus and method for resistance welding
FR2679485A1 (en) * 1991-07-26 1993-01-29 Socratech Method for the high-frequency welding of elastomeric articles
US5427645A (en) * 1991-12-09 1995-06-27 W. R. Grace & Co.-Conn. Apparatus and method for radio frequency sealing thermoplastic films together
DE4206262A1 (en) * 1992-02-28 1993-09-02 Kiefel Hochfrequenz Paul METHOD FOR WELDING HALOGEN-FREE THERMOPLASTIC FILMS
US5345070A (en) * 1992-09-25 1994-09-06 Cobe Laboratories, Inc. Radio frequency tubing sealer
JPH06278210A (en) * 1993-03-29 1994-10-04 Kinugawa Rubber Ind Co Ltd Bonding of resin composite and vulcanized rubber
CH683954A5 (en) * 1993-04-17 1994-06-15 Industrieorientierte Forsch Sealing seaming - uses reusable eddy current layer carrier between HF pad and sealing material for dissipation of the HF
DE4317572A1 (en) * 1993-05-26 1995-02-23 Wolfgang Heinrich Dipl I Hunck Chemically superimposed arc welding
US5591337A (en) * 1993-09-14 1997-01-07 Baxter International Inc. Apparatus for filtering leukocytes from blood cells
DE69424402T2 (en) * 1993-09-14 2001-01-25 Baxter Int MEDICAL CONTAINER OPENING
US6367634B1 (en) 1993-12-22 2002-04-09 Baxter International Inc. Blood collection systems including an integral, flexible filter
US20010037978A1 (en) 1999-04-20 2001-11-08 Daryl R. Calhoun Filter assembly having a flexible housing and method of making same
US6422397B1 (en) * 1993-12-22 2002-07-23 Baxter International, Inc. Blood collection systems including an integral, flexible filter
CA2153375C (en) * 1994-07-26 2000-09-12 Arnold Tobler Attachment of hook and loop fastener to a compression sleeve
JP2964914B2 (en) * 1995-05-19 1999-10-18 ヤマハ株式会社 Manufacturing method of steering wheel
US6022344A (en) * 1997-12-04 2000-02-08 Npbi International B.V. Cryopreservation bag
US6635324B1 (en) * 1998-01-21 2003-10-21 Baxter International, Inc. Medical grade tubing and methods for coupling same
JPH11268134A (en) * 1998-03-25 1999-10-05 Idemitsu Petrochem Co Ltd Fusion processing of polyolefinic resin and fusion processed product
US6036718A (en) * 1998-07-02 2000-03-14 Welch Allyn, Inc. Bladderless blood pressure cuff
US6267564B1 (en) 1999-05-12 2001-07-31 Sims Deltec, Inc. Medical reservoir bag and system
US20030209479A1 (en) * 2000-07-10 2003-11-13 Lynn Daniel R Blood filters, blood collection and processing systems, and methods therefore
US6652942B2 (en) 2001-01-08 2003-11-25 Baxter International Inc. Assembly for a flowable material container
US6869653B2 (en) * 2001-01-08 2005-03-22 Baxter International Inc. Port tube closure assembly
CA2345890C (en) * 2001-05-01 2011-06-07 Van-Rob Stampings Inc. Adhering sealing member to metal with weld heat
US20030187421A1 (en) * 2002-03-28 2003-10-02 Keith Manica Container and method of sealing
CN100460188C (en) * 2004-02-05 2009-02-11 杭州中凌广告器材有限公司 Continuous high-frequency welding machine and welding method
US7964829B2 (en) * 2006-12-20 2011-06-21 Tyco Healthcare Group Lp Apparatus and method for making bag assembly
US20090093794A1 (en) * 2007-10-03 2009-04-09 Tyco Healthcare Group Lp Bolus tube assembly
DE102009007546A1 (en) * 2008-09-08 2010-03-11 Kiefel Gmbh Device for welding a connection region of a film with a connection part and use, method, installation and bag
US8696657B2 (en) * 2008-12-22 2014-04-15 Olympus Medical Systems Corp. Treatment tool
US8151851B2 (en) 2009-06-17 2012-04-10 Tyco Healthcare Group Lp Apparatus for making bag assembly and method thereof
US8502121B2 (en) * 2009-06-17 2013-08-06 Covidien Lp Radiofrequency welding apparatus
JP5437735B2 (en) * 2009-08-17 2014-03-12 Ａｇｃエンジニアリング株式会社 Humidity control module, method for manufacturing the humidity control module, and apparatus for manufacturing the humidity control module
US8398572B2 (en) 2010-09-21 2013-03-19 Covidien Lp Bladder tube connection
DE112016000812A5 (en) * 2015-02-20 2017-11-09 Kiefel Gmbh APPENDIX AND METHOD FOR PRODUCING A BAG FOR MEDICAL PURPOSES
TWI703041B (en) * 2015-03-17 2020-09-01 美商陶氏全球科技有限責任公司 Process for sealing flexible fitment to flexible film
CN111660570B (en) * 2020-05-07 2021-08-31 江门市康馨医疗器械有限公司 Laryngeal mask, hot-melt welding method and hot-melt welding equipment
US20230022131A1 (en) * 2021-07-14 2023-01-26 Steven G. Redford Multi-chamber flexible storage tank
CN114030272A (en) * 2021-11-04 2022-02-11 中国电子科技集团公司第三十八研究所 Method for improving heat seal reliability of aerostat capsule material

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE467628A (en) *
BE485212A (en) * 1900-01-01
FR961674A (en) * 1950-05-17
GB574656A (en) * 1943-12-23 1946-01-15 Georg Haim Improvements in or relating to the flanging of pipes, conduits and the like of plastic materials
US2816596A (en) * 1955-08-09 1957-12-17 Fenwal Lab Inc Dielectric heat sealing method and apparatus
FR1206649A (en) * 1958-01-28 1960-02-10 Method and apparatus for welding sheets of thermoplastic material such as polyethylene
FR1261896A (en) * 1960-01-07 1961-05-26 Specialites P P Z Welding process for low loss angle plastics, such as polystyrene
NL302032A (en) * 1963-01-14 1900-01-01
GB1124753A (en) * 1964-10-03 1968-08-21 Tillotsons Liverpool Ltd Improvements relating to the sealing of cartons by means of an r.f. electric field
US3574031A (en) * 1967-03-24 1971-04-06 Heller William C Jun Method of heat welding thermoplastic bodies using a stratum of susceptor material
US3535184A (en) * 1967-07-12 1970-10-20 Avisun Corp Method of bonding overlapping pieces of oriented plastic having low power factor losses
DE1753844A1 (en) * 1967-08-16 1975-06-19 Heller Jun METHOD OF JOINING FILMS, AT LEAST ONE OF WHICH IS MADE OF THERMOPLASTIC PLASTIC
US3558397A (en) * 1968-02-15 1971-01-26 Plastronics Inc Method of making a tube-to-bag connection
GB1242943A (en) * 1969-03-22 1971-08-18 Heller William C Jun A process for thermally joining materials
US3663335A (en) * 1969-11-20 1972-05-16 Fiberglass Resources Corp Insulated heat packs
FR2204493A1 (en) * 1972-10-31 1974-05-24 Perdriau Alexandre High frequency welded sheet incorporating polyolefins - by heat conduction from an adjacent high loss (cardboard) component layer
US4191231A (en) * 1977-07-22 1980-03-04 Baxter Travenol Laboratories, Inc. Flexible collapsible containers, and method of molding
GB8518564D0 (en) * 1985-07-23 1985-08-29 Drg Uk Ltd Multi-layer packaging material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004267384A (en) * 2003-03-07 2004-09-30 Niccon Kohsan Co Ltd Manufacturing method of medical receptacle and medical receptacle

Also Published As

Publication number Publication date
IT8722811A0 (en) 1987-11-30
GB2198082A (en) 1988-06-08
US4950347A (en) 1990-08-21
GB8727668D0 (en) 1987-12-31
JPS63139726A (en) 1988-06-11
IT1223389B (en) 1990-09-19
FR2607437B1 (en) 1990-06-29
GB2198082B (en) 1990-12-12
FR2607437A1 (en) 1988-06-03
CN87108238A (en) 1988-08-31

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